I like the overall look of this. However, one very minor nitpick is the start button. I think the control panel would look less noisy if the start button was a solid orange or some other darker color. You already have "START" right next to the button and so the person icon on the button doesn't convey any new information. Also, the person icon is useful when there are two buttons to select single vs two player start options. Anyway, looks great!